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|
/* +------------------------------------+
* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
* InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
* E-mail:
* <brain@chatspike.net>
* <Craig@chatspike.net>
*
* Written by Craig Edwards, Craig McLure, and others.
* This program is free but copyrighted software; see
* the file COPYING for details.
*
* ---------------------------------------------------
*/
/* Now with added unF! ;) */
using namespace std;
#include "inspircd_config.h"
#include "configreader.h"
#include <unistd.h>
#include <fcntl.h>
#include <sys/errno.h>
#include <sys/ioctl.h>
#include <sys/utsname.h>
#include <time.h>
#include <string>
#include <ext/hash_map>
#include <map>
#include <sstream>
#include <vector>
#include <deque>
#include "users.h"
#include "ctables.h"
#include "globals.h"
#include "modules.h"
#include "dynamic.h"
#include "wildcard.h"
#include "mode.h"
#include "commands.h"
#include "xline.h"
#include "inspstring.h"
#include "helperfuncs.h"
#include "hashcomp.h"
#include "socketengine.h"
#include "userprocess.h"
#include "inspircd.h"
#include "typedefs.h"
#include "command_parse.h"
#include "cull_list.h"
void InspIRCd::ProcessUser(userrec* cu)
{
int result = EAGAIN;
if (cu->fd == FD_MAGIC_NUMBER)
return;
log(DEBUG,"Processing user with fd %d",cu->fd);
if (this->Config->GetIOHook(cu->GetPort()))
{
int result2 = 0;
int MOD_RESULT = 0;
try
{
MOD_RESULT = this->Config->GetIOHook(cu->GetPort())->OnRawSocketRead(cu->fd,ReadBuffer,sizeof(ReadBuffer),result2);
log(DEBUG,"Data result returned by module: %d",MOD_RESULT);
}
catch (ModuleException& modexcept)
{
log(DEBUG,"Module exception caught: %s",modexcept.GetReason());
}
if (MOD_RESULT < 0)
{
result = -EAGAIN;
}
else
{
result = result2;
}
}
else
{
result = cu->ReadData(ReadBuffer, sizeof(ReadBuffer));
}
log(DEBUG,"Read result: %d",result);
if ((result) && (result != -EAGAIN))
{
userrec *current;
int currfd;
int floodlines = 0;
this->stats->statsRecv += result;
/*
* perform a check on the raw buffer as an array (not a string!) to remove
* character 0 which is illegal in the RFC - replace them with spaces.
* XXX - no garauntee there's not \0's in the middle of the data,
* and no reason for it to be terminated either. -- Om
*/
for (int checker = 0; checker < result; checker++)
{
if (ReadBuffer[checker] == 0)
ReadBuffer[checker] = ' ';
}
if (result > 0)
ReadBuffer[result] = '\0';
current = cu;
currfd = current->fd;
// add the data to the users buffer
if (result > 0)
{
if (!current->AddBuffer(ReadBuffer))
{
// AddBuffer returned false, theres too much data in the user's buffer and theyre up to no good.
if (current->registered == REG_ALL)
{
// Make sure they arn't flooding long lines.
if (TIME > current->reset_due)
{
current->reset_due = TIME + current->threshold;
current->lines_in = 0;
}
current->lines_in++;
if (current->lines_in > current->flood)
{
log(DEFAULT,"Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
this->WriteOpers("*** Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
userrec::QuitUser(this, current,"Excess flood");
return;
}
else
{
current->WriteServ("NOTICE %s :Your previous line was too long and was not delivered (Over 512chars) Please shorten it.", current->nick);
current->recvq = "";
}
}
else
{
this->WriteOpers("*** Excess flood from %s",current->GetIPString());
log(DEFAULT,"Excess flood from: %s",current->GetIPString());
add_zline(120,this->Config->ServerName,"Flood from unregistered connection",current->GetIPString());
apply_lines(APPLY_ZLINES);
}
return;
}
if (current->recvq.length() > (unsigned)this->Config->NetBufferSize)
{
if (current->registered == REG_ALL)
{
userrec::QuitUser(this, current,"RecvQ exceeded");
}
else
{
this->WriteOpers("*** Excess flood from %s",current->GetIPString());
log(DEFAULT,"Excess flood from: %s",current->GetIPString());
add_zline(120,this->Config->ServerName,"Flood from unregistered connection",current->GetIPString());
apply_lines(APPLY_ZLINES);
}
return;
}
// while there are complete lines to process...
while (current->BufferIsReady())
{
if (TIME > current->reset_due)
{
current->reset_due = TIME + current->threshold;
current->lines_in = 0;
}
if (++current->lines_in > current->flood)
{
log(DEFAULT,"Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
WriteOpers("*** Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
userrec::QuitUser(this, current,"Excess flood");
return;
}
if ((++floodlines > current->flood) && (current->flood != 0))
{
if (current->registered == REG_ALL)
{
log(DEFAULT,"Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
WriteOpers("*** Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
userrec::QuitUser(this, current,"Excess flood");
}
else
{
add_zline(120,this->Config->ServerName,"Flood from unregistered connection",current->GetIPString());
apply_lines(APPLY_ZLINES);
}
return;
}
// use GetBuffer to copy single lines into the sanitized string
std::string single_line = current->GetBuffer();
current->bytes_in += single_line.length();
current->cmds_in++;
if (single_line.length() > 512)
single_line.resize(512);
userrec* old_comp = this->fd_ref_table[currfd];
this->Parser->ProcessBuffer(single_line,current);
/*
* look for the user's record in case it's changed... if theyve quit,
* we cant do anything more with their buffer, so bail.
* there used to be an ugly, slow loop here. Now we have a reference
* table, life is much easier (and FASTER)
*/
userrec* new_comp = this->fd_ref_table[currfd];
if ((currfd < 0) || (!this->fd_ref_table[currfd]) || (old_comp != new_comp))
{
return;
}
else
{
/* The user is still here, flush their buffer */
current->FlushWriteBuf();
}
}
return;
}
if ((result == -1) && (errno != EAGAIN) && (errno != EINTR))
{
log(DEBUG,"killing: %s",cu->nick);
userrec::QuitUser(this,cu,strerror(errno));
return;
}
}
// result EAGAIN means nothing read
else if ((result == EAGAIN) || (result == -EAGAIN))
{
/* do nothing */
}
else if (result == 0)
{
log(DEBUG,"InspIRCd: Exited: %s",cu->nick);
userrec::QuitUser(this,cu,"Client exited");
log(DEBUG,"Bailing from client exit");
return;
}
}
void InspIRCd::DoSocketTimeouts(time_t TIME)
{
unsigned int numsockets = this->module_sockets.size();
SocketEngine* SE = this->SE;
for (std::vector<InspSocket*>::iterator a = this->module_sockets.begin(); a < this->module_sockets.end(); a++)
{
InspSocket* s = (InspSocket*)*a;
if ((s) && (s->GetFd() >= 0) && (s->GetFd() < MAX_DESCRIPTORS) && (this->socket_ref[s->GetFd()] != NULL) && (s->Timeout(TIME)))
{
log(DEBUG,"userprocess.cpp: Socket poll returned false, close and bail");
this->socket_ref[s->GetFd()] = NULL;
SE->DelFd(s->GetFd());
this->module_sockets.erase(a);
s->Close();
DELETE(s);
break;
}
if (this->module_sockets.size() != numsockets)
break;
}
}
/**
* This function is called once a second from the mainloop.
* It is intended to do background checking on all the user structs, e.g.
* stuff like ping checks, registration timeouts, etc. This function is
* also responsible for checking if InspSocket derived classes are timed out.
*/
void InspIRCd::DoBackgroundUserStuff(time_t TIME)
{
CullList GlobalGoners(this);
/* XXX: IT IS NOT SAFE TO USE AN ITERATOR HERE. DON'T EVEN THINK ABOUT IT. */
for (unsigned long count2 = 0; count2 != this->local_users.size(); count2++)
{
if (count2 >= this->local_users.size())
break;
userrec* curr = this->local_users[count2];
if (curr)
{
/*
* registration timeout -- didnt send USER/NICK/HOST
* in the time specified in their connection class.
*/
if (((unsigned)TIME > (unsigned)curr->timeout) && (curr->registered != REG_ALL))
{
log(DEBUG,"InspIRCd: registration timeout: %s",curr->nick);
//ZapThisDns(curr->fd);
GlobalGoners.AddItem(curr,"Registration timeout");
continue;
}
/*
* user has signed on with USER/NICK/PASS, and dns has completed, all the modules
* say this user is ok to proceed, fully connect them.
*/
if ((TIME > curr->signon) && (curr->registered == REG_NICKUSER) && (AllModulesReportReady(curr)))
{
curr->dns_done = true;
//ZapThisDns(curr->fd);
this->stats->statsDnsBad++;
curr->FullConnect(&GlobalGoners);
continue;
}
if ((curr->dns_done) && (curr->registered == REG_NICKUSER) && (AllModulesReportReady(curr)))
{
log(DEBUG,"dns done, registered=3, and modules ready, OK");
curr->FullConnect(&GlobalGoners);
//ZapThisDns(curr->fd);
continue;
}
// It's time to PING this user. Send them a ping.
if ((TIME > curr->nping) && (curr->registered == REG_ALL))
{
// This user didn't answer the last ping, remove them
if (!curr->lastping)
{
GlobalGoners.AddItem(curr,"Ping timeout");
curr->lastping = 1;
curr->nping = TIME+curr->pingmax;
continue;
}
curr->Write("PING :%s",this->Config->ServerName);
curr->lastping = 0;
curr->nping = TIME+curr->pingmax;
}
/*
* We can flush the write buffer as the last thing we do, because if they
* match any of the above conditions its no use flushing their buffer anyway.
*/
curr->FlushWriteBuf();
if (*curr->GetWriteError())
{
GlobalGoners.AddItem(curr,curr->GetWriteError());
continue;
}
}
}
/* Remove all the queued users who are due to be quit, free memory used. */
GlobalGoners.Apply();
}
|